Improvement in skeins and boxes for wagons



' J. R. DAVES. e Improvement in Skeins and Boxes for Wagons, &c.

N0. 131,213. Patented Sep. 10, 1872.

IWW/fag.

STATES PATENT OFFICE.

JOHN It.v DAVIES, OF BASI-NE, VISCONSI-N.

lMPROVEM-ENI IN SKEINS AVND BQXE'S.; FOR WAGONS, &c.

Specification-forming partof Letters Patent No. 131,213, dated September 10, 1872;

SPECIFICATION.

Be it known that I, J oEN R. DAvIEs, of Racine, in the county of Racine and State of Wisconsin, have invented certain Improvements in Thimble-Skeins and Boxes for Wagons, &c., of which the following isa specification, reference being had to the accompanying drawv ing.

My invention consists in certain improvej ments in thimble-skeins and boxes for wagons, and in the apparatus for casting the same, as

hereinafter more fully described.

Figure 1 is a longitudinal vertical section of the thimble-skein with the core and mold used in casting the same. Fig. 2 is a view of the metal portion of the core, shown detached. Fig. 3 is a longitudinal section of the box with its core and mold; and Fig. 4 is a view of metl al portion of the box-core detached.

externalform of the article impressed there-- in, can be used repeatedly and continuously, it only-being necessary to close the mold and insert the prepared core when it is ready to receive the metal. These improved molds and cores forming the subject of a separate application, will be described herein only so far as relates to the formation or production off these improved skeins and boxes.

In the production of the skein I construct the mold as represented in Fig. 1, in which A represents the base plate, having the lower part, C, of the mold cast thereon or attached to it. The upper part, B, of the mold is made separately, in sections, divided vertically so that they can be separated to open the mold or brought together to close it. It will be obser'ved that the base plate projects inside of the mold at the point where the shoulder is to be formed on the skein, so that, when the metal is poured to form the skein O, this shoulder a will be chilled by coming in contact with this inwardly-projecting part of the plate A.

'At its lower end' the mold' isprovid'edl with a central hole to` receive the extremity or end of the core, so as to center it and hold it in place. The core for this skein is shown in Fig. 2; and it consists ofy a metal body composed of four thin plates or iianges united along their inner and vertical edges with a band, b, encircling their upper end, and a metal tube, n, secured at their lower end, as shown. This metallic skeleton-core is to be filled out to the proper shape externally by applying thereto any suitable material, so that, when set into the mold, as shown in Fig. 1, and the mold closed around it, the skein is formed by pour-in g in the molten metal in the usual manner.

By constructing the core with the tube n at the lower end and the band b at the top the steam or gases formed in the mold have ready exit, and thereby a perfect casting is insured. The base plate A is to be provided with trunnions, upon which it can be hung in a suitable frame,so that as soon as the casting isformed the whole can be inverted, when, by opening the part B of the mold, the skein with its core drops out, The mold is then turned right side up, the core inserted, and the part B closed, when it is again ready for repeating the operation.

In casting the box N I use the sectional mold B, located entirely above the base plate, as represented in Fig. 3. In this case it is desirable to chill both ends of the box, and also its interior for some distance from each end. Toaccomplish the rst I construct the mold with an inwardly-projecting flange, o, at both top and bottom, against which the molten metal rests when poured, as shown in Fig. 3. To chill the interior I construct a core-frame, G, as represented in Fig. 4, with an iron tube, m, at its smaller or upper end, and a similar tube, p, at its lower end, these chills or tubes m and p being connected with three or more bars, l. This core, like the other, is filled up, and made of the required form by any suitable material, the chills m and p being arranged to occupy so much of the interior of the box as it is desired to chill. In this case the core rests upon a plate, E, secured below the base plate A in such a manner that it can be readily released or detached, thereby letting the core Gr drop out, after which the mold is opened and the box removed. By this means I avoid the necessity of inverting the mold, as inthe other case.

It is, however, obvious that the mold for castin g the box N may, if preferred, be secured to the under side of the base plate A the same as the part G of the mold for the skein, and the Whole be mounted to turn over, as before described.

In all cases a top plate or frame, T, is used to t over the sectional part of the molds and clamp them irlnly together, and Which, being secured to the base plate by a rod, P, as represented in Fig. 3, serves also to secure the molds to the base plate. Y

It is obvious that cores provided With tube at their ends for the escape of the gases are applicable to other castings as Well as those herein described.

It will be seen that by this method of casting the skein its shoulder a is chilled, its external bearing-surface being also chilled in the usual manner, which latter being common is not herein described; also, that the box is n, substantially as and for the purpose set forth.

4. The core-frame G, consisting of the tubular chills m and p connected by one or more bars, l, substantially as and for the purpose set forth.

J NO. It. DAVIES.

Witnesses:

W. C. DODGE,

J. MGKENNEY. 

